This lesson students will get an introduction into cell growth, division and reproduction. The lesson will include a lecture and activity to reinforce lesson topics. The lesson will begin with a notes overview of why cell size is limited. From there we will briefly cover cell division and reproduction learning and comparing asexual and sexual reproduction. After the notes portion of class the class will then prefrom an activity to go over the ratio and surface area of cells using sugar cubes. With this activity students will hands on make different size sugar cube "cells" and complete a worksheet on ratio and surface area of cells.
Objectives
Students will be able to...
explain limitations to cells increasing in size
compare asexual and sexual reproduction
explain the relationship between surface area and volume and cell growth
Materials / Preparation Notes
projector
powerpoint presentation
sugar cubes
surface area lab handout
Instruction
Opening
Opening questions: (5min)
When a living thing grows what is happening it its cells?
Is the organism getting larger because the cells are getting larger or because it is producing more of them?
Why do cells grow and divide to produce more copies?
Transition:
In most cases living things grow by producing more cells. Today we are going to begin the unit on Cell Growth and division.
Activities
Students will take notes on the power point presentation. (20-30min) The presentation will cover cell size limits, including cell information overload, the exchange of materials and cell division. We will talk about the surface area and volume of a cell. The presentation will then cover two types of cell division sexual and asexual reproduction and comparisions.After the powerpoint we will then move on to the surface area activity.(30 min) Before class I have separated sugar cubes into cups to distribute to students. I will hand out the cups and activity sheets Explaining how the activity will be preformed. Students will then construct "cells" or cubes of different sizes with the sugar cubes calculating the volumes and surface areas of the cubes. Students will complete their activity sheet charts and then complete the set of questions along with activity for the remainder of the period individually. As the students are working I will walk around the class answering questions that arise and looking for correct completion of the chart and calculations.
Closing
So today we covered the beginnings of cell division and reproduction.
Closing Questions: (last 5-10 min)
Can anyone tell how living things grow?
What are some of the reasons cells divide?
How are surface area/volume related to cell growth?
Assessment Notes
Students will be assessed based on answers to questions asked in class. At the conclusion of class students will hand in their activity sheets and that will be counted as a homework/classwork grade.
Title
The Bigger the Better the Cell?Overview
This lesson students will get an introduction into cell growth, division and reproduction. The lesson will include a lecture and activity to reinforce lesson topics. The lesson will begin with a notes overview of why cell size is limited. From there we will briefly cover cell division and reproduction learning and comparing asexual and sexual reproduction. After the notes portion of class the class will then prefrom an activity to go over the ratio and surface area of cells using sugar cubes. With this activity students will hands on make different size sugar cube "cells" and complete a worksheet on ratio and surface area of cells.Objectives
Students will be able to...Materials / Preparation Notes
Instruction
Opening
Opening questions: (5min)- When a living thing grows what is happening it its cells?
- Is the organism getting larger because the cells are getting larger or because it is producing more of them?
- Why do cells grow and divide to produce more copies?
Transition:Activities
Students will take notes on the power point presentation. (20-30min) The presentation will cover cell size limits, including cell information overload, the exchange of materials and cell division. We will talk about the surface area and volume of a cell. The presentation will then cover two types of cell division sexual and asexual reproduction and comparisions.After the powerpoint we will then move on to the surface area activity.(30 min) Before class I have separated sugar cubes into cups to distribute to students. I will hand out the cups and activity sheets Explaining how the activity will be preformed. Students will then construct "cells" or cubes of different sizes with the sugar cubes calculating the volumes and surface areas of the cubes. Students will complete their activity sheet charts and then complete the set of questions along with activity for the remainder of the period individually. As the students are working I will walk around the class answering questions that arise and looking for correct completion of the chart and calculations.Closing
So today we covered the beginnings of cell division and reproduction.Closing Questions: (last 5-10 min)
Assessment Notes
Students will be assessed based on answers to questions asked in class. At the conclusion of class students will hand in their activity sheets and that will be counted as a homework/classwork grade.
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